.neirong{
    width: 50%;
    margin-left: 25%;
    font-size: 20px;
}
.tu1{
    background-image: url("./images/xinxaing1.webp");
    width: 100%;
    height: 350px;
    background-size: 100% 100%;
}
.tu2{
    background-image: url("./images/xinxaing2.webp");
    width: 100%;
    height: 350px;
    background-size: 100% 100%;
}
.tu3{
    background-image: url("./images/xinxaing3.webp");
    width: 100%;
    height: 350px;
    background-size: 100% 100%;
}